Journal
VACUUM
Volume 123, Issue -, Pages 136-139Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2015.10.025
Keywords
Brazing; Plasma treatment; Wettability; Infiltration
Funding
- National Natural Science Foundation of China [51105108, 51575135]
Ask authors/readers for more resources
Brazing SiO2f/SiO2 composites with metals is often associated with the problems of poor wettability with active brazing alloy and poor mechanical properties of joints. To overcome these problems, we report the plasma treatment on SiO2f/SiO2 by PECVD for their assisted brazing with Nb. The O-Si-O bonding changed into Si-C bonding on the surface of SiO2f/SiO2 by the plasma treatment can improve the wettability of Ag-Cu-Ti brazing alloy on SiO2f/SiO2. Furthermore, SiO2f/SiO2 after the plasma treatment can contribute to the infiltration of brazing alloy into SiO2f/SiO2 to form the pinning structure and reducing the residual stress, which could strengthen the joint. The obtained joint has a high shear strength of 60.5 MPa, approximately 11 times higher than that without plasma treatment. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available